Everybody is helped along the way by somebody.
From getting a job, or meeting a spouse, to finding a business partner or somebody to hire, one of these events most likely came about because you met somebody who introduced you.
This highlights the importance of networking and always being open to meeting new people.
You never know when they could help you. Or, you could help them.
Be open to starting new conversations, reaching out to people, offering assistance or whatever else presents itself that allows you to communicate with other people and to build your list of contacts.
This applies to introverts and extroverts. Regardless of what you identify as, networking is a critical life skill that we all need to master.